Ceiling fan



FIG. 1 is a top perspective view of a ceiling fan showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a side elevational view thereof.

The broken lines in the drawings depict parts of the ceiling fan that form no part of the claimed design. 

CLAIM I claim the ornamental design for a ceiling fan, as shown and described. 